Plantilla:Portada/styles.css

.main-header {
    border-bottom-color: transparent;
    margin-bottom: 0.25em;
    margin-top: 0;
    padding-bottom: 0;
    padding-top: 0;
}

.main-box {
    background: #fff;
    border: solid #f1f1f3;
    border-width: 0.5px 1px;
    box-shadow: 0 1px 1px rgba(0,0,0,0.15);
    padding: 1rem;
    margin-bottom: 1rem;
}

@media (min-width: 767px){
  .main-wrapper-column {
    float: left;
    width: 54%;
    margin-right: 1%;
  }
  .main-wrapper-column+.main-wrapper-column {
    float: right;
    width: 44%;
    margin-right: 0%;
  }
}