body,html{margin:0;padding:0;height:100%}body{display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(to bottom,#1a1a1a,#2e2e2e);font-family:sans-serif}.contenedor{width:600px;height:300px;background-color:#3a3a3a;border-radius:10px;box-shadow:0 0 20px rgba(0,0,0,.5);color:#fff;display:flex;justify-content:center;align-items:flex-start;padding-left:20px;flex-wrap:wrap;font-size:1.5rem}.button-enviar{width:150px;height:40px;background-color:#4caf50;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:1.2rem;transition:background-color .3s ease-in-out}.button-enviar:hover{background-color:#3e8e41}.button-enviar:disabled{opacity:.6;cursor:not-allowed}.div_Titulo{width:100%;display:flex;justify-content:center}.div_form{display:flex;flex-direction:row;align-items:center;justify-content:space-between;width:100%}label{display:inline-block;width:200px}