betaflight-configurator/tabs/configuration.css

.tab-configuration {
    position: relative;
}
.tab-configuration .groupTitle {
    padding: 0 0 5px 0;
    margin: 0 0 10px 0;

    font-size: 16px;

    border-bottom: 1px solid #dddddd;
}
.tab-configuration .leftWrapper {
    float: left;
    width: 50%;

    margin: 0 0 10px 0;
}
.tab-configuration .rightWrapper {
    float: left;

    width: calc(50% - 10px);
    margin: 0 0 10px 10px;
}
.tab-configuration .mixerList {
    float: left;

    width: 120px;
    height: 250px;

    border: 1px solid silver;
}
.tab-configuration .mixerPreview {
    float: left;

    width: calc(100% - 120px);
    height: 150px;
}
.tab-configuration .mixerPreview img {
    width: 100%;
    height: 100%;

    margin-top: 60px;
}
.tab-configuration dl.features dt {
    float: left;

    width: 10px;
    height: 18px;
    line-height: 18px;
}
.tab-configuration dl.features dt input {
    margin-top: 2px;
}
.tab-configuration dl.features dd {
    margin: 0 0 0 20px;
    height: 18px;

    line-height: 18px;
}
.tab-configuration .number {
    margin-bottom: 5px;
}
.tab-configuration .number input {
    width: 60px;
    height: 20px;
    line-height: 20px;

    text-align: right;

    border: 1px solid silver;
}
.tab-configuration .number span {
    margin-left: 10px;
    line-height: 20px;
}
.tab-configuration .gps .line {
    clear: left;
}
.tab-configuration .gps select {
    float: left;

    width: 100px;
    height: 20px;

    margin: 0 10px 5px 0;

    border: 1px solid silver;
}
.tab-configuration .gps span {
    line-height: 20px;
}
.tab-configuration .serialRX {
    width: 125px;

    border: 1px solid silver;
}
.tab-configuration .buttons {
    position: fixed;

    width: calc(100% - 20px);
    bottom: 10px;
}
.tab-configuration .save {
    display: block;
    float: right;

    height: 28px;
    line-height: 28px;

    padding: 0 15px 0 15px;

    text-align: center;
    font-weight: bold;

    border: 1px solid silver;
    background-color: #ececec;
}
.tab-configuration .save:hover {
    background-color: #dedcdc;
}