.all-cont-construction{
    position:absolute;
    width:100%;
    height:100%;
    background:url('/image/HomeAlsa.jpg');
    background-repeat:no-repeat;
    background-size:cover;
    background-position:center center;
    
}
.st1{
    fill:#fff;
}

        	.st1-add{
        	    fill:#FFFFFF;
        	    transition:all 1s;
        	}
.all-cont-construction svg{
    width: 50%;
    height: auto;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    top: 50%;
}
body{
    margin:0;
    padding:0;
}
#logo-grupoalsa{
    width:60%;
     /*opacity: 0;*/
}
@media only screen and (max-width:750px){
    #logo-grupoalsa{
    width:88%;
     /*opacity: 0;*/
}
    .all-cont-construction svg{
        width:100%;
    }
}