linktree/style.css

:root {
    --bgColor: #223344;
    --bgColor2: #090a0f;
    --accentColor: #FFF;
    --font: 'Ubuntu', sans-serif;
    --delay: .3s;
}

body {
    margin: 0;
    height: 100vh;
    font-weight: 100;
    background: radial-gradient(#0e849c,#1f1013);
    -webkit-overflow-Y: hidden;
    -moz-overflow-Y: hidden;
    -o-overflow-Y: hidden;
    overflow-y: hidden;
    -webkit-animation: fadeIn 1 1s ease-out;
    -moz-animation: fadeIn 1 1s ease-out;
    -o-animation: fadeIn 1 1s ease-out;
    animation: fadeIn 1 1s ease-out;
}

#profilePicture, #profilePicture img {
    position: relative;
    width: 96px;
    height: 96px;
    display: block;
	z-index: 20;
    margin: 40px auto 20px;
    border-radius: 50%;
    -webkit-tap-highlight-color: transparent;
}

#userName {
    color: var(--accentColor);
    font-size: 1rem;
    font-weight: bold;
    line-height: 1.25;
    display: block;
    font-family: var(--font);
    width: 100%;
    text-align: center;
    text-decoration: none;
}

#links {
    max-width: 675px;
    width: auto;
    display: block;
    margin: 27px auto;
}

.link {
    position: relative;
    background-color: transparent;
    color: var(--accentColor);
    border: solid var(--accentColor) 2px;
    border-radius: 10px;
    font-size: 1rem;
	font-weight: 500;
    text-align: center;
    display: block;
    margin-left: 10px;
    margin-right: 10px;
    margin-bottom: 10px;
    padding: 10px; /* 17px */
    text-decoration: none;
    /* transition: all .25s cubic-bezier(.08, .59, .29, .99); */
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .link:hover {
        background-color: var(--accentColor);
        color: var(--bgColor);
    }
}

.link:active {
    background-color: var(--accentColor);
    color: var(--bgColor);
}

#hashtag {
    position: relative;
    padding-bottom: 20px;
    color: var(--accentColor);
    font-size: 1rem;
    display: block;
    font-family: var(--font);
    width: 100%;
    text-align: center;

    /*  animation   */
    overflow: hidden;
    background: linear-gradient(90deg, var(--bgColor), var(--accentColor), var(--bgColor));
    background-repeat: no-repeat;
    background-size: 80%;
    animation: animate 6s linear var(--delay) infinite;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: rgba(255, 255, 255, 0);
}


/*-------------------------animations-----------------------*/
@keyframes transitionAnimation {
    0% {
        opacity: 0;
        transform: translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes animate {
    0% {
      background-position: -500%;
    }
    100% {
      background-position: 500%;
    }
}

@keyframes animStar {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-2000px);
    }
}


/*-------------------------popup------------------------*/
/* credits: https://www.youtube.com/watch?v=lAS2glU0xlc */
.overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2;
    visibility: hidden;
    opacity: 0;
    overflow: hidden;
    transition: .5s ease-in-out;
}

.popup {
    position: relative;
    top: -43%;
    /* right: -100vh; */
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 400px;
    /* max-height: 500px; */
    width: auto;
    height: auto;
    margin: 56px;
    background-color: var(--bgColor);
    /* transform: rotate(32deg); */
    transform: scale(0);
    transition: .5s ease-in-out;
}

.popup-quote {
    font-family : Baskerville, Georgia, serif;
    font-style : italic;
    position: flex;
    color: var(--accentColor);
    padding: 20px;
    text-align: center;
    font-size: 1rem;
}

.popup-photo {
    display: flex;
    width: 100%;
    height: 100%;
}

.popup-photo img {
    width: 100%;
    height: 100%;
}

.overlay:target {
    visibility: visible;
    opacity: 1;
}

.overlay:target .popup {
    transform: scale(1);
    top: 0;
    /* right: 0; */
    /* transform: rotate(0); */
}

.popup-close {
    position: absolute;
    right: -1rem;
    top: -1rem;
    width: 3rem;
    height: 3rem;
    font-size: 1.7rem;
    font-weight: 400;
    border-radius: 100%;
    background-color: var(--bgColor);
    z-index: 4;
    color: var(--accentColor);
    line-height: 2.7rem;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .popup-close:hover {
        background-color: var(--accentColor);
        color: var(--bgColor);
    }
}

.popup-close:active {
    background-color: var(--accentColor);
    color: var(--bgColor);
}

.light {
    position: absolute;
    width: 0px;
    opacity: .75;
    background-color: white;
    box-shadow: #e9f1f1 0px 0px 20px 2px;
    opacity: 0;
    top: 100vh;
    bottom: 0px;
    left: 0px;
    right: 0px;
    margin: auto;
}

.x1{
  -webkit-animation: floatUp 4s infinite linear;
  -moz-animation: floatUp 4s infinite linear;
  -o-animation: floatUp 4s infinite linear;
  animation: floatUp 4s infinite linear;
   -webkit-transform: scale(1.0);
   -moz-transform: scale(1.0);
   -o-transform: scale(1.0);
  transform: scale(1.0);
}

.x2{
  -webkit-animation: floatUp 7s infinite linear;
  -moz-animation: floatUp 7s infinite linear;
  -o-animation: floatUp 7s infinite linear;
  animation: floatUp 7s infinite linear;
  -webkit-transform: scale(1.6);
  -moz-transform: scale(1.6);
  -o-transform: scale(1.6);
  transform: scale(1.6);
  left: 15%;
}

.x3{
  -webkit-animation: floatUp 2.5s infinite linear;
  -moz-animation: floatUp 2.5s infinite linear;
  -o-animation: floatUp 2.5s infinite linear;
  animation: floatUp 2.5s infinite linear;
  -webkit-transform: scale(.5);
  -moz-transform: scale(.5);
  -o-transform: scale(.5);
  transform: scale(.5);
  left: -15%;
}

.x4{
  -webkit-animation: floatUp 4.5s infinite linear;
  -moz-animation: floatUp 4.5s infinite linear;
  -o-animation: floatUp 4.5s infinite linear;
  animation: floatUp 4.5s infinite linear;
  -webkit-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -o-transform: scale(1.2);
  transform: scale(1.2);
  left: -34%;
}

.x5{
  -webkit-animation: floatUp 8s infinite linear;
  -moz-animation: floatUp 8s infinite linear;
  -o-animation: floatUp 8s infinite linear;
  animation: floatUp 8s infinite linear;
  -webkit-transform: scale(2.2);
  -moz-transform: scale(2.2);
  -o-transform: scale(2.2);
  transform: scale(2.2);
  left: -57%;
}

.x6{
  -webkit-animation: floatUp 3s infinite linear;
  -moz-animation: floatUp 3s infinite linear;
  -o-animation: floatUp 3s infinite linear;
  animation: floatUp 3s infinite linear;
  -webkit-transform: scale(.8);
  -moz-transform: scale(.8);
  -o-transform: scale(.8);
  transform: scale(.8);
  left: -81%;
}

.x7{
  -webkit-animation: floatUp 5.3s infinite linear;
  -moz-animation: floatUp 5.3s infinite linear;
  -o-animation: floatUp 5.3s infinite linear;
  animation: floatUp 5.3s infinite linear;
  -webkit-transform: scale(3.2);
  -moz-transform: scale(3.2);
  -o-transform: scale(3.2);
  transform: scale(3.2);
  left: 37%;
}

.x8{
  -webkit-animation: floatUp 4.7s infinite linear;
  -moz-animation: floatUp 4.7s infinite linear;
  -o-animation: floatUp 4.7s infinite linear;
  animation: floatUp 4.7s infinite linear;
  -webkit-transform: scale(1.7);
  -moz-transform: scale(1.7);
  -o-transform: scale(1.7);
  transform: scale(1.7);
  left: 62%;
}

.x9{
  -webkit-animation: floatUp 4.1s infinite linear;
  -moz-animation: floatUp 4.1s infinite linear;
  -o-animation: floatUp 4.1s infinite linear;
  animation: floatUp 4.1s infinite linear;
  -webkit-transform: scale(0.9);
  -moz-transform: scale(0.9);
  -o-transform: scale(0.9);
  transform: scale(0.9);
  left: 85%;
}

button:focus{
  outline: none;
}

@-webkit-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@-moz-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@-o-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}