body {
    width: 100%;
    height: 100%;
    margin: 0 auto;
}
.menu-principal {
    width: 100%;
    background-color: #252323;
    height: 60px;
}
main{
    margin: 0 auto;
    width: 980px;
    position: relative;
    background-color: blue;
}

  

.logo{
    float: left;
    padding: 16px;
    width: 75%;
}
.redes-sociais ul li{
    margin-left:15px ;
    display: inline-block;
     
    list-style: none;
}
.redes-sociais{
    width: 25%;
    float: right;
}
.header-2{
    background-color: aqua;
    width: 100%;
    border: bottom 3px solid aquamarine;
}

.menu {
    width: 70%;
    float:left
}
.menu ul li{
    display: inline-block;
    color: #8b8b8b;
    margin-left: 15px;
}
.menu ul li a {
        color: #c21d1d;
        text-decoration: none;
        font-size: 20px;
        text-transform: uppercase;
}
.busca{
    width: 30%;
    float: right;
}
.chtitulo {
    width: 100%;
    float:none ;
    background-color: gray;
    border: solid;
   }

.chsesq {
    display: inline;
    width: 25%;
    float: left;
    background-color: gray;
    padding-right: 50px;
   }
   
.chtexto {
    display: inline;
    width: 40%;
    float: left;
    padding-left: 55%;
    padding-right: 85%;
   }
   
   
.chdirei {
    display: inline;
    width: 25%;
        background-color: gray;
    padding-left: 65px;
   }

IMG.chadis{
       display: block;
       margin-left: auto;
       margin-right: auto;
   }