base.css

@media only screen and (max-width: 600px) {
    .inner-body {
        width: 100% !important;
    }

    .footer {
        width: 100% !important;
    }
}

@media only screen and (max-width: 500px) {
    .button {
        width: 100% !important;
    }
}

/* Base */

body {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif,
        'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    position: relative;
}

body {
    -webkit-text-size-adjust: none;
    background-color: #ffffff;
    color: #718096;
    height: 100%;
    line-height: 1.4;
    margin: 0;
    padding: 0;
    width: 100% !important;
}

p,
ul,
ol,
blockquote {
    line-height: 1.4;
    text-align: left;
}

a {
    color: #3869d4;
}

a img {
    border: none;
}

/* Typography */

h1 {
    color: #3d4852;
    font-size: 18px;
    font-weight: bold;
    margin-top: 0;
    text-align: left;
}

h2 {
    font-size: 16px;
    font-weight: bold;
    margin-top: 0;
    text-align: left;
}

h3 {
    font-size: 14px;
    font-weight: bold;
    margin-top: 0;
    text-align: left;
}

p {
    font-size: 16px;
    line-height: 1.5em;
    margin-top: 0;
    text-align: left;
}

p.sub {
    font-size: 12px;
}

/* Layout */

.wrapper {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 100%;
    background-color: #2B303A;
    margin: 0;
    padding: 0;
    width: 100%;
}

.content {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 100%;
    margin: 0;
    padding: 0;
    width: 100%;
}

/* Header */

.header {
    padding: 25px 0;
    text-align: center;
}

.header a {
    color: #dadada;
    font-size: 19px;
    font-weight: bold;
    text-decoration: none;
}

/* Logo */

.logo {
    height: 75px;
    max-height: 75px;
    width: 75px;
}

/* Body */

.body {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 100%;
    background-color: #2B303A;
    border-bottom: 1px solid #2B303A;
    border-top: 1px solid #2B303A;
    margin: 0;
    padding: 0;
    width: 100%;
}

.inner-body {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 570px;
    background-color: #ffffff;
    border-color: #e8e5ef;
    border-radius: 2px;
    border-width: 1px;
    box-shadow: 0 2px 0 rgba(0, 0, 150, 0.025), 2px 4px 0 rgba(0, 0, 150, 0.015);
    margin: 0 auto;
    padding: 0;
    width: 570px;
}

/* Subcopy */

.subcopy {
    border-top: 1px solid #e8e5ef;
    margin-top: 25px;
    padding-top: 25px;
}

.subcopy p {
    font-size: 14px;
}

/* Footer */

.footer {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 570px;
    margin: 0 auto;
    padding: 0;
    text-align: center;
    width: 570px;
}

.footer p {
    color: #b0adc5;
    font-size: 12px;
    text-align: center;
}

.footer a {
    color: #b0adc5;
    text-decoration: underline;
}

/* Tables */

.table table {
    -premailer-cellpadding: 0;
    -premailer-cellspacing: 0;
    -premailer-width: 100%;
    margin: 30px auto;
    width: 100%;
}

.table th {
    border-bottom: 1px solid #edeff2;
    margin: 0;
    padding-bottom: 8px;
}

.table td {
    color: #74787e;
    font-size: 15px;
    line-height: 18px;
    margin: 0;
    padding: 10px 0;
}

.content-cell {
    max-width: 100vw;
    padding: 32px;
}


/* Utilities */

.break-all {
    word-break: break-all;
}