.nav {
    background: #F2F6F8;
    height: 54px
}

.nav img {
    display: block;
    margin: 12px 0;
    float: left;
}

.nav ul {
    margin: 0 0 0 40px
}

.nav ul li a {
    display: inline;
    line-height: 54px
}
.about-us {
    float: right;
}

.about-us a {
    color: #000;
    line-height: 54px;
}
.inp {
    width: 26%;
    margin-top: 20px;
}

.logo{float:left}

.logo a{display:block;}

.logo a img{display:block;height:30px;}

.nav img,
.nav ul,
.nav ul li {
    float: left
}