.alerta{
  background-color: rgba(238, 230, 230, 0.8);
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  z-index: 1000;
}
 .loader{
    background-color: rgba(238, 230, 230, 0.8);
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    z-index: 1000;
 }

#login .container #login-row #login-column #login-box {
    margin-top: 20px;
    max-width: 400px;
    height: 320px;
    border: 2px solid #03b84f;
    background-color: #ffffff;
  }
  #login .container #login-row #login-column #login-box #login-form {
    padding: 10px;
  }
  #login .container #login-row #login-column #login-box #login-form #register-link {
    margin-top: -85px;
  }
  .contenedor_tabla{
     overflow-y: scroll;
  }