foundry/Data/modules/_chatcommands/styles/chatcommands.css

#chat-form {
    position: relative;
}

#chat-form #autocomplete-suggestion {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    opacity: 0.5;
    box-shadow: none;
    outline: none;
    pointer-events: none;
    background: transparent;
}

#autocomplete-menu {
    flex: 0;
    position: relative;
}

#autocomplete-menu #context-menu {
    bottom: 0;
    margin-left: 6px;
    width: calc(100% - 12px);
    display: flex;
    flex-direction: column;
}
#autocomplete-menu #context-menu ol {
    max-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    width: calc(100% + 7px);
    padding-right: 7px;
    scrollbar-color: #782e22 var(--color-border-dark-3);
}
#autocomplete-menu ol::-webkit-scrollbar {
    background: var(--color-border-dark-3);
}

#autocomplete-menu li.context-item:focus {
    outline: none;
    outline: 1px solid var(--color-border-highlight-alt);
    box-shadow: 0 0 10px inset var(--color-shadow-highlight);
}
#autocomplete-menu li.context-item.info:hover {
    text-shadow: none;
    color: revert;
}

#autocomplete-menu ol>li.context-item {
    padding: 6px 4px 7px 4px;
    margin: 1px;
    line-height: normal;
    overflow: hidden;
}
#autocomplete-menu li.context-item.command {
    padding-left: 11px;
    text-indent: -6px;
    font-size: small;
}
#autocomplete-menu li.context-item.command > * {
    text-indent: 0px;
}

#autocomplete-menu .command-title {
    font-size: larger;
}
#autocomplete-menu .command-title > img {
    max-height: 20px;
    vertical-align: text-top;
    margin-right: 3px;
    border: none;
}
#autocomplete-menu .command-title > i {
    margin-right: 3px;
}

#autocomplete-menu .command-footer {
    margin-top: 3px;
    display: flex;
    flex-direction: row-reverse;
    flex-wrap: nowrap;
    justify-content: space-between;
}
#autocomplete-menu .command-footer .notes {
    margin: 0;
    flex: 0 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
#autocomplete-menu li.context-item:hover .notes {
    text-shadow: none;
}
#autocomplete-menu li .notes {
    color: var(--color-text-light-7);
    font-size: var(--font-size-12);
    line-height: var(--line-height-16);
}
#autocomplete-menu li p.notes {
    text-align: center;
    margin: 3px 0;
}
#autocomplete-menu span.parameter {
    background: var(--color-border-dark-4);
    padding: 1px 2px;
    margin: 0 2px;
    border-radius: 2px;
}

@keyframes spinner {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}
#autocomplete-menu li.loading {
    position: relative;
    height: 32px;
}
#autocomplete-menu li.loading::before,
#chatcommand-loading::before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 50%;
    top: 50%;
    border: solid 5px var(--color-border-light-2);
    border-bottom-color: var(--color-border-light-1);
    border-radius: 50%;
    animation: 1.5s linear infinite spinner;
    transform: translate(-50%, -50%);
}
#chatcommand-loading[data-active="0"]::before {
    display: none;
}