body{
    color: #fff;
    font-size: 1.6rem;
    line-height: 1.5;
    text-align: center;
    font-family: 'Open Sans',sans-serif;
    background-color: #333;
}

*{
    margin:0px;
    padding: 0px;
    box-sizing: border-box;
}
html{
    font-size: 7px;
}
img{
    width: 100%;
    height: auto;
}
.clearfix::after{
    content:"";
    display:block;
    clear: both;

}
a{
    text-decoration: none;
}
p{
    
    padding: 1.6rem 0;
    font-size: 1.5rem;
}
header{
    height: 50rem;
    
}
header h1{
    padding: 11rem;
    padding-bottom: 0px;
}
.bg-image{
    z-index: -1;
    position: absolute;
    background-image:url(../img/aletbanner2.jpg);
    background-size: cover;
    background-position:center;
    height: 50rem;
    width: 100%;
    opacity: 0.4;
}
/*section-b*/
#section-b{
padding: 2rem;
}
#section-b .content h1{
    font-size: 5rem;
}
#section-b ul{
    list-style: none;

}
#section-b .content{
    padding-bottom: 1.2rem;
}

#section-b li{
    background: #333;
    color:#fff;
    margin-bottom: 1.5rem; 
}
.col-title{
    font-size: 2.5rem;
}
.col-content{
    padding: 1.5rem;

}
/*section-c*/
#section-c{
    
    background-color: #eaeaea;
    color:#333;
    padding: 5rem;
}
/*section-d*/
#section-d .box:first-child{
    background-color: #2690d4;
}
#section-d .box{
    background-color: #414141;
}
#section-d .box{
    padding: 5rem ;
}
#section-d .box p{
    text-align: left;
}
/*footer*/
footer{
    height: auto;
    padding:1rem;
    background: #000;

}
footer a{
    color:#2690d4;  
}
footer a:hover{
    color:#fff;
     
}
@media screen and ( min-width:800px){
    html{
        font-size:9px ;
    }
}
@media screen and ( min-width:1200px){
    #section-b li{
        width: 28%;
        margin: 1%;
        display: inline-block;
    }
    .box{
        width: 50%;
        float: left;
    }
    html{
        font-size: 12px;
    }
}