ThinkAdmin/public/static/theme/err/500/style.css

:root {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.25);
}

html {
    width: 100%;
    height: 100%;
    display: flex;
    align-content: center;
    justify-content: center;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: #2e3b64;
    font-size: 30px;
}

a {
    color: white;
    display: inline;
}

#error {
    margin-bottom: 1rem;
    font-size: 2rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.075em;
    color: #C94D4D;
    -webkit-animation: pulse 4s infinite alternate;
    animation: pulse 4s infinite alternate;
    position: relative;
}

@-webkit-keyframes pulse {
    from {
        opacity: 0.5;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes pulse {
    from {
        opacity: 0.5;
    }
    50% {
        opacity: 0.5;
    }
}

#error::before {
    content: "";
    width: 0.75rem;
    height: 50vh;
    margin-bottom: 0.75em;
    position: absolute;
    left: 50%;
    bottom: 100%;
    transform: translateX(-50%);
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 60%, transparent 100%);
}

#desc {
    color: #64acd2;
    margin: 2em 0 1em;
}

.error-num, .error-num__clip, .error-num__clip-left, .error-num__clip-left::before, .error-num__clip::before {
    position: relative;
    font-size: 10rem;
    font-family: "Oswald";
    letter-spacing: -0.01em;
    color: white;
    -webkit-animation: colorSplit 1.25s steps(2, end) infinite;
    animation: colorSplit 1.25s steps(2, end) infinite;
}

@-webkit-keyframes colorSplit {
    25% {
        text-shadow: -0.02em 0 0 #ED008C, 0.025em 0 0 #0087EF;
    }
    75% {
        text-shadow: -0.035em 0 0 #ED008C, 0.04em 0 0 #0087EF;
    }
}

@keyframes colorSplit {
    25% {
        text-shadow: -0.02em 0 0 #ED008C, 0.025em 0 0 #0087EF;
    }
    75% {
        text-shadow: -0.035em 0 0 #ED008C, 0.04em 0 0 #0087EF;
    }
}

.error-num__clip, .error-num__clip-left, .error-num__clip-left::before, .error-num__clip::before {
    position: absolute;
    top: 0;
    left: -2px;
    z-index: 10;
    color: #333;
    overflow: visible;
    -webkit-clip-path: polygon(0% 0%, 100% 0, 100% 25%, 0 25%, 0 30%, 100% 30%, 100% 50%, 0 50%, 0 60%, 100% 60%, 100% 65%, 0 65%, 0 80%, 100% 80%, 100% 85%, 0 85%, 0% 0%);
    clip-path: polygon(0% 0%, 100% 0, 100% 25%, 0 25%, 0 30%, 100% 30%, 100% 50%, 0 50%, 0 60%, 100% 60%, 100% 65%, 0 65%, 0 80%, 100% 80%, 100% 85%, 0 85%, 0% 0%);
    -webkit-animation: glitch 1s steps(2, start) infinite;
    animation: glitch 1s steps(2, start) infinite;
}

@-webkit-keyframes glitch {
    30% {
        left: 0;
    }
    to {
        left: 0;
    }
}

@keyframes glitch {
    30% {
        left: 0;
    }
    to {
        left: 0;
    }
}

.error-num__clip::before, .error-num__clip-left::before {
    content: "500";
    left: 0.05em;
    color: white;
    z-index: 9;
    -webkit-clip-path: polygon(0% 0%, 100% 0, 100% 26%, 0 26%, 0 29%, 100% 29%, 100% 51%, 0 51%, 0 59%, 100% 59%, 100% 66%, 0 66%, 0 79%, 100% 79%, 100% 86%, 0 86%, 0% 0%);
    clip-path: polygon(0% 0%, 100% 0, 100% 26%, 0 26%, 0 29%, 100% 29%, 100% 51%, 0 51%, 0 59%, 100% 59%, 100% 66%, 0 66%, 0 79%, 100% 79%, 100% 86%, 0 86%, 0% 0%);
}