первое задание с которым я никак не совладаю, помогите пожалуйста, подскажите
<body>
<div class="header">
<div class="layout-positioner">
<div class="layout-column">
<div class="header-1 hidden">
<p>Header</p>
</div>
</div>
</div>
</div>
<div class="menu">
<div class="layout-positioner">
<div class="menu hidden">
<p>Menu</p>
</div>
</div>
</div>
<div class="promo">
<div class="layout-positioner">
<div class="layout-column">
<div class="promo1 hidden">
<p>Promo 1</p>
</div>
</div>
<div class="layout-column">
<div class="promo2 hidden">
<p>Promo 2</p>
</div>
</div>
</div>
</div>
<div class="features">
<div class="layout-positioner">
<div class="layout-column">
<div class="left hidden">
<p>Left</p>
</div>
</div>
<div class="layout-column">
<div class="main hidden">
<p>Main</p>
</div>
</div>
<div class="layout-column">
<div class="right hidden">
<p>Right</p>
</div>
</div>
</div>
</div>
<div class="footer">
<div class="layout-positioner">
<div class="footer-1 hidden">
<p>Footer</p>
</div>
</div>
</div>
</body>
`html,
body {
margin: 0;
padding: 0;
}
body {
width: 450px;
height: 335px;
font-family: “Arial”, sans-serif;
font-size: 10px;
color: white;
}
.clearfix::after {
display: table;
content: “”;
clear: both;
}
.layout-positioner {
width: 350px;
margin: 0 auto;
}
.layout-positioner::after {
display: block;
content: “”;
clear: both;
}
.hidden {
display: block;
}
.header {
color: white;
background: #34495e;
padding: 10px;
}
.header .layout-column {
background: #c0392b;
}
.header-1 {
background: #c0392b;
padding: 5px;
box-sizing: border-box;
}
.menu {
background: #3498DB;
padding: 5px;
margin: 0;
min-height: 20px;
}
.promo {
min-height: 35px;
color: white;
background: #34495e;
padding: 10px 0;
}
.promo .layout-column {
float: left;
margin: 0;
margin-right: 10px;
width: 160px;
min-height: 60px;
background: #c0392b;
padding-left: 5px;
}
.promo .layout-column: last-child {
margin-right: 0;
}
.features {
margin: 10px 0;
}
.features .layout-column {
float: left;
margin-right: 10px;
min-width: 65px;
min-height: 110px;
background: #3498DB;
padding-left: 5px;
}
.features .main {
min-width: 180px;
}
.features .layout-column:last-child {
margin-right: 0;
}
.footer {
min-height: 35px;
color: white;
background: #34495e;
margin: 10px 0;
}
.footer-1 {
padding: 5px;
}