*{
   padding: 0;
   margin: 0;
   background-color: transparent !important;
   scroll-behavior: smooth;
}

header{
    position: sticky;
    position: -webkit-sticky;
    top: 0;
    z-index: 2;
}

html{
    background-image: url('../images/bg.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    width: 80%;
    margin: auto;

    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
}
html::-webkit-scrollbar {
    display: none;
}

.btn-danger{
    background: tomato !important;
}
.btn-danger:hover{
    background: rgb(199, 75, 54) !important;
}

.co-name{
    color: white;
    font-size: x-large;
    font-family: Helvetica;
}

.slide-img{
    width: 100%;
    height: 40rem;
}


h1{
    color: tomato;
    text-decoration: underline;
    font-weight: bolder;
}

.intro{
    color: white;
    font-weight: bolder;
}

#about{
    background-color: rgba(128, 128, 128, 0.5) !important;
}

h2{
    text-shadow: 3px 3px 10px black;
}

h2, h3{
    color: tomato;
    text-decoration: underline;
}

nav{
    background-color: black !important;
}

.nav.nav-tabs{
    background-color: rgb(37, 36, 36, 0.5) !important;
}

.nav-btn{
    color: tomato;
}
.nav-btn:hover{
    color: rgb(223, 134, 118);
}
.nav-btn.nav-link.active{
    color: rgb(255, 255, 255);
}

.tab-pane{
    color: white;
    background-color: rgba(128, 128, 128, 0.5) !important;
}

#services{
    background: url(../images/services.jpg) !important;
    background-size: cover !important;
    background-position: 40rem center !important;
}

#ava-serv{
    background-color: rgba(128, 128, 128, 0.5) !important;
}

#training{
    background: url(../images/training-bg.jpg) !important;
    background-size: cover !important;
    background-repeat: no-repeat;
    background-position: bottom !important;
}

#training-container{
    background-color: rgba(128, 128, 128, 0.5) !important;
}

#contacts{
    background: url(../images/contact.jpg) !important;
    background-size: cover !important;
    background-repeat: no-repeat;
    background-position: center !important;
}



input[type=text]{
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    margin-top: 6px;
    margin-bottom: 16px;
    resize: vertical;
} 
input[type=submit]{
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#copyright-container{
    background-color: rgb(14, 13, 13) !important;
    margin-top: 26%;
}

#copyright-container-certificate{
    background-color: rgb(14, 13, 13) !important;
    margin-top: 26%;
}


@media only screen and (max-width: 1024px){
    html{
        width: 100%;
    }
    nav{
        text-align: center;
    }
    #copyright-container-certificate{
        width: 100% !important;
    }
}

@media only screen and (max-width: 991px){
    .co-name{
        visibility: hidden;
    }
    nav{
        text-align: center;
    }
    #copyright-container-certificate{
        width: 100% !important;
    }
}