body {
    background: #f1f1f1;
    font-family: Arial, sans-serif;
}
.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}
.tab {
    padding: 10px 20px;
    cursor: pointer;
    background: #ddd;
    border: 1px solid #ccc;
    margin: 0 5px;
    border-radius: 5px;
}
.tab.active {
    background: #bbb;
}
.device {
    display: none;
    margin: auto;
}
.device.active {
    display: block;
}
.laptop, .tablet, .smartphone, .custom {
    position: relative;
    margin: auto;
    border: 16px black solid;
    border-radius: 36px;
}
.laptop {
    width: 1366px;
    height: 800px;
    border-width: 24px 24px 80px;
}
.tablet {
    width: 768px;
    height: 1024px;
    border-top-width: 60px;
    border-bottom-width: 60px;
}
.smartphone {
    width: 360px;
    height: 640px;
    border-top-width: 60px;
    border-bottom-width: 60px;
}
.custom {
    border-width: 16px;
}
.content {
    width: 100%;
    height: 100%;
    background: white;
}
iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}
.slider-container {
    text-align: center;
    margin-top: 20px;
}
.slider-container input {
    width: 300px;
}
.input-container {
    text-align: center;
    margin-top: 20px;
}
.input-container textarea {
    width: 80%;
    height: 100px;
    margin-bottom: 10px;
}
.manual-input {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}
.manual-input input {
    width: 60px;
    padding: 5px;
    text-align: center;
}