CSS
.flex-container {
display: flex;
flex-wrap: nowrap;
background-color: #47B06D;
}
.flex-container > div {
background-color: #ffffff;
text-align: center;
margin: 15px;
padding: 20px;
font-size: 30px;
flex: 1;
}
HTML
<div class="flex-container">
<div><img src="1.png"><br>Текст 1</div>
<div><img src="1.png"><br>Текст 2</div>
<div><img src="1.png"><br>Текст 3</div>
</div>