.company-introduction {
    background: white;
    height: auto;
    padding-bottom: 20px;
}

.img-background-1 {
    background-image: url("./images/bn_welcome.png") !important;
    height: 440px;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    color: white;
}

.img-background-2 {
    background-image: url("./images/vietsid_img_02.png") !important;
    height: 330px;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.bg-changer {
    height: auto;
}

.img-background-3 {
    background-image: url("./images/background.jpg") !important;
    height: auto;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    padding-bottom: 40px;
}

.banner-welcome {
    background-image: url("./images/bn_welcome.png") !important;
    height: 200px;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    margin-top: 14px;
    padding-bottom: 40px;
    position: relative;
    top: -14px;
}

    .banner-welcome .text {
        position: absolute;
        bottom: 0px;
        left: 0px;
        padding-left: 100px;
        color: white;
        width: 100%;
        background: rgba(0,0,0,0.5);
    }

        .banner-welcome .text .fa {
            margin-right: 10px;
        }

.border-ef img {
    margin-top: 20px;
}

.border-ef a {
    padding-top: 14px;
    display: block;
    color: black;
    font-size: 18px;
    text-align: center;
    text-transform: uppercase;
    text-decoration: none;
    position: relative;
    background-color: white;
    margin-top: 14px;
    margin-bottom: 14px;
    padding-bottom: 14px;
    cursor: pointer;
}

    .border-ef a:hover {
        text-decoration: none;
        color: red;
    }

    .border-ef span:before,
    .border-ef span:after,
    .border-ef a:before,
    .border-ef a:after {
        content: '';
        position: absolute;
        width: 10px;
        height: 10px;
        transition: 1s;
        background-color: red;
        mix-blend-mode: hue;
    }

    .border-ef a:before {
        top: -2px;
        left: -2px;
    }

    .border-ef a:after {
        top: -2px;
        right: -2px;
    }

.border-ef span:before {
    bottom: -2px;
    left: -2px;
}

.border-ef span:after {
    bottom: -2px;
    right: -2px;
}

.border-ef a:hover span:before,
.border-ef a:hover span:after,
.border-ef a:hover:before,
.border-ef a:hover:after {
    width: calc(300px /2);
    height: calc(50px /2);
}

.solution-company {
    height: 200px;
    overflow-y: hidden;
    transition: 1s;
}

.open-to-read {
    height: auto;
    padding-bottom: 10px;
    transition: 1s;
}

.readmore {
    margin: auto;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    border: 1px solid black;
    font-size: 8px;
    cursor: pointer;
    z-index: 5;
    background-color: orange;
    color: white;
    margin-top: 20px;
    margin-bottom: 25px;
    column-span: 1px;
}

    .readmore i {
        display: block;
        font-size: 14px;
    }

.footer {
    color: white;
    height: auto;
    padding: 14px 0;
    margin-top: 14px;
    background-color: #363636;
}

    .footer ul span {
        text-transform: uppercase;
    }

    .footer ul li {
        list-style: none;
    }

    .footer a {
        color: white;
    }

        .footer a:hover {
            color: red;
            cursor: pointer;
        }

    .footer p {
        font-size: 12px;
        letter-spacing: 0.2px;
    }

.projects {
    padding: 10px;
    width: 300px !important;
    height: 250px;
    float: left;
    margin: auto !important;
    position: relative;
    background-color: white;
    border-radius: 20px;
    border: 1px solid gray;
    top: 35% !important;
    padding-top: 60px !important;
    margin-left: 100px !important;
}

    .projects img {
        position: absolute;
        top: 0%;
        left: 50%;
        transform: translate(-50%,-50%);
    }

.gioithieu {
    border-radius: 4px;
    padding: 10px;
    margin-top: 20px;
    margin-bottom: 10px;
    border: 1px dashed red;
}

    .gioithieu ul li {
        list-style: none;
    }

        .gioithieu ul li:before {
            content: '+ ';
            color: red;
        }

.main {
    width: 100%;
    height: 310px;
    position: relative;
}

.slide {
    margin: auto;
    width: 100%;
    height: 100%;
    position: relative;
    animation-name: slowshow;
    animation-duration: 2s;
}

.next {
    padding: 14px;
    color: white;
    font-size: 15px;
    text-align: center;
    border-radius: 5px;
    position: absolute;
    top: 45%;
    right: 5%;
    animation-name: next;
    animation-duration: 0.4s;
    border: 1px solid white;
}

.prev {
    padding: 14px;
    color: white;
    font-size: 15px;
    text-align: center;
    border-radius: 5px;
    position: absolute;
    top: 45%;
    left: 5%;
    animation-name: prev;
    animation-duration: 0.4s;
    border: 1px solid white;
}

    .next:hover, .prev:hover {
        background-color: black;
        transition: background-color 0.8s;
        cursor: pointer;
    }

@keyframes next {
    from {
        right: 20%
    }

    to {
        right: 23%
    }
}

@keyframes prev {
    from {
        left: 20%
    }

    to {
        left: 23%
    }
}

.main img {
    width: 100%;
    height: 100%;
}

.gallery img {
    width: 100%;
    height: 150px;
    padding: 0px;
    transition: 0.5s;
}

.gallery {
    padding-bottom: 40px;
}

    .gallery img:hover {
        transform: scale(1.1);
    }

    .gallery .col-lg-2 {
        padding: 0;
        margin: 1px;
    }

.left .col-lg-4 {
    padding-bottom: 0;
    height: auto;
}