<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {font-family: Arial, Helvetica, sans-serif;}
* {box-sizing: border-box;}
.form-inline {
display: flex;
flex-flow: row wrap;
align-items: center;
}
.form-inline label {
margin: 5px 10px 5px 0;
}
.form-inline input {
vertical-align: middle;
margin: 5px 10px 5px 0;
padding: 10px;
background-color: #fff;
border: 1px solid #ddd;
}
.form-inline button {
padding: 10px 20px;
background-color: dodgerblue;
border: 1px solid #ddd;
color: white;
cursor: pointer;
}
.form-inline button:hover {
background-color: royalblue;
}
@media (max-width: 800px) {
.form-inline input {
margin: 10px 0;
}
.form-inline {
flex-direction: column;
align-items: stretch;
}
}