.form-group {
    position: relative;
    margin-bottom: 15px;
}
label {
    display: block;
    margin-bottom: 5px;
}
input, select, textarea {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}
.hidden {
    display: none;
}
.array-item {
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
}
.info-icon {
    position: relative;
    margin-left: 5px;
    cursor: pointer;
}
.tooltip {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background-color: #333;
    color: #fff;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
    z-index: 1000;
    white-space: nowrap;
}
.info-icon:hover .tooltip {
    display: block;
}