*{
 margin:0;
 padding:0;
}
.main_articulo
{
 position: fixed;
 display: none;
 float: left;
 margin: 0 auto;
 color: #fff;
 width: 100%;
 height:100%;
 box-sizing: border-box;
 overflow: hidden;
 background-color: rgba(0, 0, 0, 0.3);
 background: rgba(0, 0, 0, 0.3);
 color: rgba(0, 0, 0, 0.3);
 z-index: 999999;  
}
.articulos_body
{
 display: block;
 float: left;
 margin-top: 15%;
 margin-left: 35%;
 width: 30%;
 height: 20%;
 border-radius: 5px;
 box-shadow: 0 5px 5px rgba(0, 0, 0, 0.2);
 z-index: 99999;
}
.articulos_body p#tituloart
{
 display: block; 
 float: left;
 width: 99%;
 height: auto;
 font-weight: 400; 
 font-family: "Open Sans", sans-serif;
 font-optical-sizing: auto;
 font-size: 10pt;
 color: black;
 margin-left: 1%;
 margin-top: 5px;
 margin-bottom: 3%;
 border-bottom: 1px solid black;
}
.articulos_body label#lbarti
{
 display: block;
 float: left; 
 margin-left: 35%;
 width: 30%;
}
.articulos_body input#cantarti
{
 width: 40%;
 height: 100%;
 text-align: right;
 padding-right: 5px;
 border:none;
 border-left: 1px solid #D3D3D3;
}
.artboto
{
 display: block;
 float: left;
 margin-top: 5%;
 width: 100%;
 height: 30px;
 /* background: lightgoldenrodyellow;   */
}
.artboto a#btn_art_rapi_ok
{
 float: right;
 margin-right: 1%;
 width: 90px;
 height: 100%;
 line-height: 25px;
}
.artboto a#btn_art_rapi_can
{
 float: right;
 margin-right: 0.5%;
 width: 90px;
 height: 100%;
 line-height: 25px;
} 

@media only screen and (min-device-width : 320px) and (max-device-width : 480px)
{
 .articulos_body
 {
  margin-left: 10%;
  width: 80%;
  height: 17%;
 }
 .articulos_body label#lbarti
 {
  margin-left: 25%;
  width: 40%;
 }
 .artboto
 {
  margin-top: 40px;
 }
}