* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.menu-container {
    margin: 20px;
}

.menu {
    display: flex;
    gap: 3px;
    margin: 0;
    padding: 0;
}

.item {
    flex: 0 0 140px;
    list-style: none;
    text-align: center;
    background: #d9d9d9;
    padding: 7px 5px 3px;
    border-radius: 5px 5px 0 0;
}

@media screen and (max-width: 768px) {
    .item {
        flex: 140px;
    }
}

.item.active {
    background: pink;
}

.item:hover {
    cursor: pointer;
}

.container {
    border: 2px solid pink;
    padding: 20px;
}

.content {
    display: none;
}

.content.show {
    display: block;
}