body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}
.product-container{
     background-color: #fff;
    padding: 35px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}
.header{
    color: rgb(80, 72, 72);   
}
.header h2{
     margin: 0 0 30px 0;
    font-size: 2.2em;
    font-weight: 500;
    color: #444;
}
.form-product .product-group{
    margin-bottom: 10px;
}
.form-product label {
    display: block;
    margin-bottom: 8px;
    font-size: 1.1em;
    font-weight: normal;
    color: #444;
}
.product-group input{
    width: 100%;
    padding: 15px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    color: #333;
    margin-bottom: 10px;
}
.you{
    display: flex;
    gap: 15px;
} 
.dome{
    display: flex;
    gap: 15px;
}
.bai1{
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}
.bai2{
     display: flex;
    gap: 20px;
    margin-bottom: 50px;
}
.input-with-icon {
    flex-grow: 1;
    display: flex;
    align-items: center;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0;
}

.input-with-icon span {
    background-color: #e9ecef;
    border-right: 1px solid #ccc;
    padding: 8px 12px;
    height: 100%;
    display: flex;
    align-items: center;
    color: #5c6a74;
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}

.input-with-icon input {
    border: none;
    flex-grow: 1;
}
.signature-container label {
    display: block;
    margin-bottom: 8px;
    font-size: 1.1em;
    font-weight: normal;
    color: #444;
}

.signature-box {
    position: relative; /* Quan trọng để định vị nút "Clear" */
    border: 2px solid #007bff; /* Viền xanh dương */
    border-radius: 4px;
    background-color: #f7f9fc;
}

#signature-pad {
    display: block;
    background-color: #fff;
    width: 100%;
    border-bottom: 1px solid #ccc;
    cursor: crosshair; /* Thay đổi con trỏ chuột thành dấu thập */
}

#clear-button {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    font-size: 0.9em;
    cursor: pointer;
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.c1 button{
    width: 100%;
    padding: 15px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    color: #333;
    margin-bottom: 10px;
    background-color: #007bff;
}