body { 
    background-image: url(../imags/churrasco-1.jpg);
    background-repeat: no-repeat;
    background-size: 100%;
}


.container{
    font-family: Arial, Helvetica, sans-serif;
    max-width: 300px;
    margin: auto;
    background-color: sienna;
    padding: 20px;
    border-radius: 10px;
    text-align: center;

    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    opacity:calc(1)
}

input{
    width: 100%;
    display: block;
    padding: 5px;
    margin-bottom: 10px;
}