html,
body {
    margin: 0;
    padding: 0;
}

html {
    font-size: 14;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;
    line-height: 1.5em;
    color: #545468;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

.cf:before,
.cf:after {
    content: " ";
    /* 1 */
    display: table;
    /* 2 */
}

.cf:after {
    clear: both;
}

.container {
    width: 640px;
    margin: 36px auto 0 auto;
    padding: -15px;
}

.column {
    float: left;
    padding: 15px;
}

.column-third {
    width: 33.33%;
}

.column-half {
    width: 50%;
}

.column-full {
    width: 100%;
}

.column input[type="text"] {
    width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    font-weight: 400;
}

label {
    display: block;
    font-weight: 600;
    font-size: 12px;
    margin-bottom: 3px;
}

input[type="text"] {
    padding: 8px 10px;
    font-size: 1em;
    font-family: 'Open Sans', sans-serif;
    border: 1px solid #ddd;
    border-radius: 2px;
    outline: none;
}

input[type="text"]:focus {
    border-color: #1E90FF;
}

input[type="text"]:invalid,
input[type="email"]:invalid {
    border-color: #E32739;
}

input[type="text"]:invalid + .validation-message,
input[type="email"]:invalid + .validation-message {
    display: block;
}

.validation-message {
    display: none;
    margin-top: 3px;
    font-weight: 600;
    font-size: 12px;
    color: #E32739;
}

button {
    padding: 12px 25px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    color: #FFFFFF;
    background-color: #1E90FF;
    border: none;
    border-radius: 2px;
    outline: none;
}

button:focus {
    box-shadow: 0 0 1px 2px rgba(30, 30, 30, 0.15);
}
