jellyfin-web/dashboard-ui/bower_components/emby-webcomponents/emby-button/emby-button.css

[is="emby-button"] {
    position: relative;
    display: inline-block;
    align-items: center;
    box-sizing: border-box;
    margin: 0 .29em;
    background: transparent;
    text-align: center;
    font-size: inherit;
    font-family: inherit;
    color: inherit;
    outline-width: 0;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;
    z-index: 0;
    padding: 0.7em 0.57em;
    font-weight: normal;
    vertical-align: middle;
    border: 0;
    vertical-align: middle;
    border-radius: 3px;
    /* These are getting an outline in opera tv browsers, which run chrome 30 */
    outline: none !important;
    position: relative;
    overflow: hidden;
    font-weight: 500;
    text-transform: uppercase;
}

    [is="emby-button"].raised, [is="emby-button"].fab {
        box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
    }

    [is="emby-button"].fab {
        display: inline-flex;
        border-radius: 50%;
        min-width: 56px;
        min-height: 56px;
        height: 5.2vh;
        width: 5.2vh;
        background-color: #444;
        padding: .6em;
        box-sizing: border-box;
        align-items: center;
        justify-content: center;
        text-align: center;
        color: #fff !important;
        margin: 0;
    }

    [is="emby-button"].noflex {
        display: inline-block;
    }

    [is="emby-button"].fab.mini {
        min-width: 40px !important;
        min-height: 40px !important;
        height: 3.3vh !important;
        width: 3.3vh !important;
        padding: .4em;
    }

    [is="emby-button"].fab iron-icon {
        width: 100%;
        height: 100%;
        vertical-align: middle;
    }

    [is="emby-button"].block {
        display: block;
        align-items: center;
        justify-content: center;
        margin: .25em 0;
        width: 100%;
    }

    [is="emby-button"].raised:focus {
        box-shadow: 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.4);
        transition: box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    [is="emby-button"] iron-icon + span {
        margin-left: .5em;
    }

[is=paper-icon-button-light] {
    position: relative;
    display: inline-block;
    align-items: center;
    box-sizing: border-box;
    margin: 0 .29em;
    background: transparent;
    text-align: center;
    font-size: inherit;
    font-family: inherit;
    color: inherit;
    outline-width: 0;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;
    z-index: 0;
    min-width: 40px;
    min-height: 40px;
    width: 40px;
    height: 40px;
    padding: 8px;
    font-weight: normal;
    vertical-align: middle;
    border: 0;
    vertical-align: middle;
    /* These are getting an outline in opera tv browsers, which run chrome 30 */
    outline: none !important;
    position: relative;
    overflow: hidden;
    font-weight: 500;
    text-transform: uppercase;
    border-radius: 50%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

.layout-tv [is=paper-icon-button-light] {
    width: 4vh;
    height: 4vh;
}

[is=paper-icon-button-light] iron-icon {
    width: 100%;
    height: 100%;
    /* Make sure its on top of the ripple */
    position: relative;
    z-index: 1;
    vertical-align: middle;
}

[is=paper-icon-button-light] img {
    width: 100%;
    /* Can't use 100% height or it will stretch past the boundaries in safari */
    /*height: 100%;*/
    max-height: 100%;
    /* Make sure its on top of the ripple */
    position: relative;
    z-index: 1;
    vertical-align: middle;
}

[is=paper-icon-button-light]:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    transition: opacity .3s ease-out;
    background: currentcolor;
    opacity: 0;
}

[is=paper-icon-button-light]:focus:after {
    opacity: .2;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    top: 50%;
    left: 50%;
    background: currentcolor;
    animation: ripple-animation .8s;
    opacity: 0.25;
    -webkit-transform: translate(0, 0);
    transform: translate3d(0, 0, 0);
}

@keyframes ripple-animation {
    from {
        transform: none;
        opacity: 0.5;
    }

    to {
        transform: scale(20);
        opacity: 0;
    }
}