jellyfin-web/dashboard-ui/css/search.css

.headerSearch {
    display: none;
    margin-right: 3em;
    position: relative;
}

.txtSearch {
    vertical-align: middle;
    font: 16px arial,sans-serif;
    height: 28px;
    margin: 0 .15em 0 0;
    width: 150px;
}

.btnSearch {
    vertical-align: middle;
    background-color: #4d90fe;
    background-image: -webkit-gradient(linear,left top,left bottom,from(#4d90fe),to(#4787ed));
    background-image: -webkit-linear-gradient(top,#4d90fe,#4787ed);
    background-image: -moz-linear-gradient(top,#4d90fe,#4787ed);
    background-image: -ms-linear-gradient(top,#4d90fe,#4787ed);
    background-image: -o-linear-gradient(top,#4d90fe,#4787ed);
    background-image: linear-gradient(top,#4d90fe,#4787ed);
    border: 1px solid #3079ed;
    color: #fff!important;
    margin: 0 0;
    -moz-border-radius: 2px;
    -webkit-border-radius: 2px;
    border-radius: 2px;
    font-weight: bold;
    height: 28px;
    min-width: 54px;
    padding: 0 8px;
    text-align: center;
    text-decoration: none !important;
    -moz-user-select: none;
    -webkit-user-select: none;
    text-align: center;
}

    .btnSearch img {
        height: 28px;
        margin: 0 auto;
        border: 0;
    }

.searchHints {
    width: 148px;
    color: #000;
    background-color: #fff;
    border: 1px solid #999;
    position: absolute;
    z-index: 999;
    margin-top: 1px;
    font-size: 14px;
}

.searchHintsContent {
    padding: 10px;
}

.searchHint {
    display: block;
    text-decoration: none;
    color: #000;
    border-bottom: 1px solid #eee;
}

    .searchHint:hover {
        background-color: #eee;
    }

.searchHintImage {
    display: inline-block;
    width: 15%;
    vertical-align: middle;
}

.searchHintContent {
    vertical-align: top;
    display: inline-block;
    width: 85%;
}

.searchHintName {
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.searchHintSecondaryText {
    font-size: 11px;
    color: #999;
    margin-top: 3px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.searchHintContentInner {
    padding: 2px 5px;
}

@media all and (min-width: 650px) {

    .headerSearch {
        display: inline-block;
    }
}

@media all and (min-width: 750px) {

    .txtSearch {
        width: 200px;
    }

    .searchHints {
        width: 198px;
    }
}

@media all and (min-width: 850px) {
    .txtSearch {
        width: 250px;
    }

    .searchHints {
        width: 248px;
    }
}

@media all and (min-width: 1200px) {
    .txtSearch {
        width: 350px;
    }

    .searchHints {
        width: 348px;
    }
}

@media all and (min-width: 1440px) {
    .txtSearch {
        width: 450px;
    }

    .searchHints {
        width: 448px;
    }

    .searchHintImage {
        width: 12%;
    }

    .searchHintContent {
        width: 88%;
    }
}