.colum2{
    margin-top: 50px;
    margin: auto;
}
.formulario{
    float: left;
    width: 90%;
    margin: auto;
    color: #999;
    box-sizing: border-box;
}
.caja{
    width: 40%;
    height: 40px;
    margin: 20px;
    padding: 10px;
    font-size: 14px;
    box-sizing: border-box;
}
.cajac{
    width: 85%;
    height: 100px;
    margin: 20px;
    padding: 10px;
    font-size: 14px;
    box-sizing: border-box;
}
button{
    background: green;
    display: inline-block;
    padding: 20px;
    width: 87%;
    color: whitesmoke;
    margin-bottom: 20px;
     
}