client/themes/material/css/icon.css

/* Icon */

span.icon {
    font-size: 3rem;
    line-height: 5rem;
    text-align: center;
    background-size: cover;
    background-position: center;
}

span.icon img {
    max-width: 100%;
    max-height: 100%;
}

span.icon.top {
    position: relative;
    top: -1.5rem;
    width: 100%;
    height: 10rem;
    line-height: 10rem;
    display: block;
    margin: 0;
    left: 0;
}

span.icon.top.preview {
    height: 25rem;
}

span.icon.primary.thumb {
    left: 0;
    width: 7rem;
    top: 0;
    height: 100%;
    margin: 0;
    line-height: 7.5rem;
}
/*
*[dir="rtl"] span.icon.primary.thumb {
    right: 0;
}
*/
li.oppose span.icon {
    left: auto;
    right: 2rem;
}

span.icon.bubble {
    border-radius: 5rem;
    font-size: 0;
    font-size: 2.5rem;
}

span.icon.bubble img {
    border-radius: 5rem;
}

span.icon.bubble i {
    font-size: 3rem;
    line-height: 5rem;
}

ul.list li span.icon.small {
    width: 3rem;
    height: 3rem;
    line-height: 3rem;
    margin-top: -1.5rem;
}

ul.list li span.icon.small:not(.bubble) i {
    padding: 1rem 0;
}

/*ul.list li > .control.small,
ul.list li > .primary.small {
    width: 3rem;
    height: 3rem;
    line-height: 3rem;
}*/

span.icon.small.bubble:first-letter,
span.icon.small.bubble i {
    font-size: 2rem;
    line-height: 1.5em;
    vertical-align: text-top;
}

span.icon.status:after {
    content: '';
    display: block;
    width: 2rem;
    height: 2rem;
    left: 3.25rem;
    top: 3.25rem;
    position: absolute;

    border-radius: 2em;
    background-color: #DDD;
}

main ul li .control > i {
    margin-left: 0;
}