* {
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.wrapper {
    width: 708px;
}

form {
  display: flex;
  flex-direction: column;
  width: 100%;
}

form input {
    margin-bottom: 20px;
    height: 46px;
    width: 100%;
    box-sizing: border-box;
    border: #D3D3D3 2px solid;
    padding: 10px;
}

form button {
    height: 46px;
    padding: 10px;
    flex: auto;
    background-color: #124299;
    color: white;
    border: none;
    font-size: 14px;
    text-transform: uppercase;
    font-weight: 600;
}

@media (max-width: 748px)  { /* smartphones, Android phones, landscape iPhone */ 
    .wrapper {
        width: calc(100% - 40px);
    }
}