body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

#titulo {
    padding-top: 5px;
    color: #D0B911;
    background-color: black;
    margin: 0;
    position: fixed;
    height: 80px;
    width: 100%;
    top: -15px;
    left: 0;
    text-align: center;
    line-height: 50px;
    z-index: 1000;
}

h1{
    float: left;
}

#titulo img {
    max-width: 100px;
    height: 70px;
    float: left;
    margin-top: 10px;
}

#titulo a {
    text-decoration: none;
    color: #fff;
    float: right;
    margin-right: 20px;
}

#princi {
    display: flex;
    padding: 20px;
    margin-top: 100px;
}

#izquierda {
    flex: 1;
    padding: 20px;
    background-color: #fff;
    margin: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-left: 10px;
}

#derecha {
    flex: 1;
    padding: 20px;
    background-color: #fff;
    margin: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-right: 10px;
}

.formu {
    margin-bottom: 15px;
}

.formu label {
    display: block;
    margin-bottom: 5px;
}

.formu input{
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.formu button {
    background-color: #5fcf62;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 4px;
}

.formu button:hover {
    background-color: #2e7a32;
}