Response Header Issue - html

Question

I have this code and I want the css code with a max-width: 780px, the .second in a line alone because it is the logo, and the .first and .third on the line below. I don't know how to do it.
Normally, this elements are Ordered in one line with a wider width than 780px. The normal order: first, second, third
The order I want with a max-width: 780px:
.................second..............
........first........|.......third......
<header>
<div class="first">
</div>
<div class="second">
</div>
<div class="third">
</div>
</header>
header {
background: #FFF;
width: 100%;
height: 160px;
}
.SearchBar {
width: 30%;
height: 130px;
display: inline-block;
float: left;
text-align: center;
}
.SearchBar:before {
/* create a full-height inline block pseudo=element */
content: ' ';
display: inline-block;
vertical-align: middle;
/* vertical alignment of the inline element */
height: 100%;
}
.SearchBar>p {
padding-right: 0;
padding-left: 0;
display: inline-block;
}
.SearchBar>p>input {
background: url("../images/search_icon.png") no-repeat scroll 0 0 transparent;
background-position: 90% 50%;
width: 230px;
height: 50px;
border: 1px solid #c8c8c8;
font-family: FuturaLight;
text-indent: 20px;
font-size: 18px;
}
.SearchBar>p>input:enabled {
cursor: text;
}
.logo {
width: 40%;
height: 130px;
display: inline-block;
margin: auto;
text-align: center;
}
.logo:before {
/* create a full-height inline block pseudo=element */
content: ' ';
display: inline-block;
vertical-align: middle;
/* vertical alignment of the inline element */
height: 100%;
}
.logo a {
display: inline-block;
vertical-align: middle;
/* vertical alignment of the inline element */
}
.shoppingcar {
width: 30%;
height: 130px;
display: inline-block;
float: right;
text-align: center;
}
.shoppingcar:before {
content: ' ';
display: inline-block;
vertical-align: middle;
height: 100%;
}
.cartletter {
padding-right: 0;
padding-left: 0;
display: inline-block;
font-family: FuturaLight;
}
<header>
<div class="subheader"></div>
<div class="SearchBar">
<a> FIRST</a>
</div>
<div class="logo">
<a> SECOND</a>
</div>
<div class="shoppingcar">
<p class="cartletter">
<a> THIRD</a>
</p>
</div>
</header>

Answer 1

hmm, well since there's no css code and jsfiddle, I'm assuming this can do the trick ? try it on and let me know please ?
#media all and (max-width: 780px) {
.second {
display:inline-block;
}
.first {
display:inline;
float:left;
}
.third {
display:inline;
float:right;
}
}