html {
    position: relative;
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 24px;
    color: #566470;
    font-size: 16px;
    overflow-x: hidden;
    position: relative;
}
.letter1 {
    font-size: 3rem;
}
.letter2 {
    font-size: 2.5rem;
}
.letter3 {
    font-size: 2rem;
}
.letter4 {
    font-size: 1.5rem;
}

.head-section {
    background-image: url(../images/weld.jpg);
    color: #f7f7f8;
    padding-top: 20px;
    padding-bottom: 40px;
    position: relative;
    background-size: cover;
}
.layer-overlay {
    background-color: rgba(58, 130, 192, 0.53);
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.navbar-brand {
    font-size: 28px;
    font-weight: bold;
    color: #ffffff;
}
.navbar-brand span {
    margin: 0px -2px;
}
.navbar a {
    color: #e8eaec;
}
.navbar a:hover {
    color: #ffffff;
}
.head-content {
    padding: 55px 0;
}
.head-content .headline {
    margin-bottom: 40px;
    padding-bottom: 20px;
}
.headline {
    position: relative;
    margin-bottom: 30px;
}
.headline h2 {
    font-size: 3rem;
}
.headline h3 {
    padding: 10px 0px;
}
.email-form {
    background-color: #5091c9;
    padding: 4px;
    border-radius: 4px;
    margin: 30px 0;
}
.email-input {
    padding: 0px 20px;
}
.btn-submit-form {
    font-size: 15px;
    background-color: #3f698e;
    border-bottom-left-radius: 0px;
    border-top-left-radius: 0px;
    color: #fff;
    font-weight: normal;
}

.technologies-list {
    padding: 30px;
    position: relative;
    border-bottom: 1px solid #edeff1;
}
.technologies-layer-overlay {
    background-color: rgba(215, 218, 228, 0.25);
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.section {
    margin-top: 40px;
}
.subsection {
    margin-bottom: 50px;
}
.card-header {
    background-color: #f2f3f5;
    border-bottom: 1px solid #fff;
}
.card1 {
    background-color: #bbceea;
}
.card2 {
    background-color: #a0b8dc;
}
.card3 {
    background-color: #90aad2;
}
.card4 {
    background-color: #829eca;
}
.feature-box {
    margin-bottom: 20px;
    position: relative;
    text-align: center;
    padding: 20px;
    background-color: #f2f3f5;
}
.feature-box h4 {
    font-weight: bold;
    margin-bottom: 15px;
    font-size: 20px;
}
.feature-box i {
    font-size: 30px;
    color: #607ab3;
    margin-bottom: 20px;
}
.line-2 .feature-box {
    background-color: #fdf3b1;
} 
.line-3 .feature-box {
    background-color: #d4bfef;
} 
.price-card {
    background-color: #e9edf1;
    border-radius: 0px;
}
.price-card-header {
    padding-top: 35px;
}
.signup-btn {
    background-color: #5091c9;
    color: #fff;
}
footer {
    height: 100px;
    vertical-align: middle;
    background-color: #293a4c;
    color: #fff;
    position: relative;
}
.copyright-block {
    vertical-align: middle;
    position: absolute;
    top: 41%;
}

.alert-subscribed {
    line-height: 3rem;
    font-size: 2rem;
    background-color: #fff;
    color: #0b4a8a;
}
.form-control {
    border: none;
}
.faq-header {
    cursor: pointer;
}
.faq-header:hover {
    background-color: #dbe3ea;
}
.logo-icon-small {
    margin: 10px 10px 20px 10px;
}

/**** Bootstrap extension ***/

.navbar-inverse .navbar-toggler {
    border-color: rgba(255,255,255,.1);
}

.navbar-inverse .navbar-toggler-icon {
    background-image: none;
    background: #f5f6f7;
    height: 3px;
    display: block;
    margin-bottom: 4px;
}

.navbar-nav .nav-item {
    padding: 0 0.5rem;
    font-size: 16px;
}

.nav-link {
    color: #a3cbef;
}

.nav-link.active {
    color: #fff;
}
.card {
    border: none;
}
.card-header .btn-link {
    color: #566478;
}