.hero, .stack {
    background-color: #73b38f;
    padding: 15px;
    margin-top: 15px;
    border-radius: 8px;
    text-align: center;
}
.stack {
    background-color: #689e80;
}
.stack-collection {
    display: flex;
    justify-content: center;
    gap: 20px;
}
.stack-item {
    padding: 10px;
    width: 100px;
    cursor: pointer;
    border: 1px solid #000000;
    border-radius: 8px;
    transition: background-color .3s;
    user-select: none;
}
.html:hover {
    background-color: #d15f5f;
    transition: background-color .3s;
}
.css:hover {
    background-color: #3f9b9c;
    transition: background-color .3s;
}
.js:hover {
    background-color: #b1a646;
    transition: background-color .3s;
}
.linux:hover {
    background-color: #3b413c;
    transition: background-color .3s;
    color: #ffffff;
}