*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    
}

:root {
  --background-color: hsl(200,100%,40%);
  --selected-color: hsl(200,100%,55%);
  --hover-color: hsl(200,100%,90%);
}

.card {
    position: absolute;
    width: min(400px, 50%);
    height: 100%;
    background-color: #bbb;
    border: 1px solid #222;
    right: 0;
}


.comboBox{
    width: 100%;
    cursor: pointer;
    user-select: none;
}


.comboBox.open > .item{
    display: block;
}

.comboBox .item{
    display: none;
    background-color: var(--background-color);
    padding: 5px;
}

.comboBox .item:hover{
    background-color: var(--hover-color);
}

.comboBox .item.selected{
    display: block;
    background-color: var(--selected-color);
}