#tipos_sistemas
{
    margin: 0 auto;
    width: 100%;
    max-width: 1300px;
    overflow: hidden;
}
#tipos_sistemas h2
{
    color: #003cc8;
    font-size: 35px;
    margin-top: 3%;
    margin-bottom: 5%;
}
.columnas
{
    float: left;
    overflow: hidden;
    margin-bottom: 50px;
}
#columna1
{
    width: 35%;
    margin-right: 5%;
    margin-left: 10%;
    font-size: 18px;
    
    margin-bottom: 50px;
}
#columna2
{
    width: 35%;
    margin-right: 10%;
    margin-left: 5%;
    
    margin-bottom: 50px;
}

@media screen and (max-width: 800px) {
    .columnas
    {
        clear: both;
    }
    #columna1
    {
       
        width: 80%;
         margin: 0 auto;
         margin-left: 10%;
         margin-right: 10%;
        margin-bottom: 30px;
        margin-top: 30px;
    }
    #columna2
    {
         width: 80%;
         margin: 0 auto;
         margin-left: 10%;
         margin-right: 10%;
        margin-bottom: 30px;
        margin-top: 30px;
    }
}
@media screen and (max-width: 500px) {
    .columnas img
    {
        width: 40%;
    }
}