body {
  background: #2C3E50;  /* fallback for old browsers */
  background: -webkit-linear-gradient(to right, #4CA1AF, #2C3E50);  /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(to right, #4CA1AF, #2C3E50); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  
}

.imagenes-busqueda{
    max-width: 100px;
    max-height: 300px;
    min-height: 300px;
    min-width: 140px;
    margin: 5px;
}