body {
    background: #fc0;
}

.container {
    display: flex;
    justify-content: space-around;
    gap: 20px;
}

.list-side {
    flex: 1;
    padding-right: 10px;
    padding-left: 35px;
    max-width: 125px;
    font-family: "Roboto", sans-serif;
    background: #fff;
    text-align: center;
    user-select: none;
}

.list-side a {
    background: #fff;

}

.list-side a.active {
    background: #aaa;

}

.page-side {
    display: block;
}

.scrollable-pages-container {
    display: flex;

}

.codepage {
    display: none;
    padding: 10px;
    background: #fff;
}

.codepage.active {
    display: block;
}

.scrollable-pagetab-container {
    display: flex;
    background: #f1f1f1;
    border-bottom: 1px solid #ccc;
}

.scrollable-pagetab-container button {
    flex: 1;
    padding: 10px;
    border: none;
    background: #f1f1f1;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.scrollable-pagetab-container button.active {
    background: #fff;
    border-bottom: 2px solid #007bff;
    color: #007bff;
}

.textarea {
    flex: 1;
    box-sizing: border-box;
}

.horizontal-container{
    font-family: "Roboto", sans-serif;
    display: flex;
    border-radius: 4px;
    text-align: center;
    user-select: none;
}

.item {
    display: inline-block;
    width: 25%;
    vertical-align: top;
  }

#box1{ width: 16%; background:#4df; }
#box2{ width: 16%; background:rgb(51, 201, 238); }
#box3{ width: 16%; background:rgb(34, 221, 174); }
#box4{ width: 16%; background:rgb(17, 204, 195); }

.scrollable-tabs-container {
    font-family: "Roboto", sans-serif;
    background: #4df;
    max-width: 900px;
    margin: 16px left;
    border-radius: 4px;
}

.scrollable-tabs-container ul {
    display: flex;
    gap: 16px;
    padding: 12px 12px;
    margin: 0;
    list-style: none;
}

.scrollable-tabs-container a {
    text-decoration: none;
    background: #333;
    color: #fff;
    padding: 4px 24px;
    display: inline-block;
    border-radius: 4px;
    user-select: none;
}

.scrollable-tabs-container a.active {
    background: #4e4;
    color: #f00;
}

.scrollable-tabs-container input {
    text-decoration: none;
    background: #333;
    color: #fff;
    padding: 4px 24px;
    display: inline-block;
    border-radius: 4px;
    user-select: none;
}

.scrollable-tabs-container p {
    text-decoration: none;
    background: #333;
    color: #fff;
    padding: 4px 24px;
    display: inline-block;
    border-radius: 4px;
    user-select: none;
    white-space: nowrap;
    margin: 0;
}

.scrollable-tabs-container ul::-webkit-scrollbar {
    display: none;
}