User:一位史蒂夫/SandBox/style.css

.mw-allpages-body, .mw-prefixindex-body {
    columns: 22em 1!important;
}
 
.line {
    font-size: 28px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
}
 
.animation {
    animation: grow 4s steps(44) 1s normal both, 
    blink 0.5s steps(44) infinite normal;
}
 
@keyframes grow {
    from {
        width: 0;
    }
    to {
        width: 647px;
    }
}
 
@keyframes blink {
    from {
        border-right-color: #eee;
    }
    to {
        border-right-color: #222;
    }
}