linktree/style.css

@import url('https://fonts.googleapis.com/css?family=Karla:400,700&display=swap');

:root {
    --bgColor: #1C1C1C;
    --accentColor: #E6E6E6;
    --font: 'Karla', sans-serif;
}

body {
    background-color: var(--bgColor);
}

#profilePicture {
    width: 96px;
    height: 96px;
    display: block;
    margin: 35px auto 20px;
    border-radius: 50%;
}

#userName {
    color: #bbb;
    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 {
    font-family: var(--font);
    color: var(--bgColor);
    background-color: var(--accentColor);
    border: solid var(--accentColor) 2px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    display: block;
    margin-bottom: 20px;
    padding: 17px;
    text-decoration: none;
    transition: all .25s cubic-bezier(.08, .59, .29, .99);
}

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

#profileQuote {
    color: #bbb;
    font-size: 1rem;
    margin-bottom: 20px;
    display: block;
    font-family: var(--font);
    width: 100%;
    text-align: center;

    /*  animation   */
    overflow: hidden;
    background: linear-gradient(90deg, #000, #fff, #000);
    background-repeat: no-repeat;
    background-size: 80%;
    animation: animate 3s linear infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: rgba(255, 255, 255, 0);
}

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