arduino-ide-extension/src/browser/style/monitor.css
.monitor-tab-icon {
    -webkit-mask: url("../icons/monitor-tab-icon.svg");
    mask: url("../icons/monitor-tab-icon.svg");
}

.serial-monitor {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.serial-monitor-messages {
    white-space: "pre";
    font-family: monospace;
}

.serial-monitor-messages pre {
    margin: 0px;
}

.serial-monitor .head {
    display: flex;
    padding: 0px 5px 5px 5px;
    height: 27px;
    background-color: var(--theia-activityBar-background);
}

.serial-monitor .head .send {
    display: flex;
    flex: 1;
}

.serial-monitor .head .send > label:before {
    content: "";
    position: absolute;
    top: -1px;
    background: var(--theia-icon-loading-warning) center center no-repeat;
    animation: theia-spin 1.25s linear infinite;
    width: 30px;
    height: 30px;
}

.serial-monitor .head .send > label {
    position: relative;
    width: 100%;
    display: flex;
    align-self: baseline;
}

.serial-monitor .head .send > input,
.serial-monitor .head .send > label > input {
    line-height: var(--theia-content-line-height);
    height: 27px;
    width: 100%;
}

.serial-monitor .head .send > label > input {
    padding-left: 30px;
    box-sizing: border-box;
}

.serial-monitor .head .send > input:focus,
.serial-monitor .head .send > label > input:focus {
    border-color: var(--theia-focusBorder);
}

.serial-monitor .head .config {
    display: flex;
}

.serial-monitor .head .config .select {
    margin-left: 3px;
}

.serial-monitor .body {
    overflow: auto;
    flex: 1;
    padding: 5px;
}

.p-TabBar-toolbar .item.arduino-monitor {
    width: 24px;
    justify-content: center;
    font-size: medium;
    box-sizing: border-box;
}

.p-TabBar-toolbar .item.arduino-monitor.toggled {
    background: var(--theia-sideBarSectionHeader-background);
    filter: contrast(80%);
}

.p-TabBar-toolbar .item .clear-all {
    background: var(--theia-icon-clear) no-repeat;
}
