.st-dropdown-selected:after{
    content:'';
    display: inline-block;
    content: "";
    top: 2px;
    transition: .2s;
    width: 0;
    height: 0;
    vertical-align: middle;
    margin-left: 4px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #fff;
}
.st-dropdown {
    position: relative;
    display: inline-block;
    cursor: pointer;
    color: #fff;
}
.st-dropdown-selected {
    color: initial;
    font-size: 12px;
}
.st-dropdown-options {
    position: absolute;
    top: calc(100% + 16px);
    left: 0;
    background: #1e1e1e;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    display: none;
    flex-direction: column;
    z-index: 999;
    padding: 6px 0;
    min-width: 160px;
}
.st-dropdown-options.show { display: flex; }
.st-dropdown-option {
    padding: 6px 12px;
    transition: background 0.2s;
    border-radius: 6px;
    font-size: 12px;
}
.st-dropdown-options:before {
    border-right: 8px solid transparent;
    position: absolute;
    display: block;
    content: "";
    border-bottom: 8px solid #212121;
    border-left: 8px solid transparent;
    left: 20px;
    top: -8px;
}
.st-dropdown-option:hover { background: #2e2e2e; }

.st-gmt .st-dropdown-options.show { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; width: 480px; }