body {
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #212529;
    z-index:0;
    position: relative;
}


*{
    margin:0;
    padding: 0;
    box-sizing: border-box;
}

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

.intriductory_overlay{
    position: absolute;
    width: 100%;
    min-height: 100vh;
    display:flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    /*margin:15px;*/
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    z-index:1;
    color: white;
    -webkit-transition: all .5s ease-in-out;
    transition: all .5s ease-in-out;

}
.central_title{
    font-size:3rem ;
}

.central_content{
    max-width: 500px;
    padding-bottom: 30px;
    
}
.motto{
    font-size: 5rem;
}
button {
    outline: none !important;
    border: none;
    background: 0 0;
}
.introductory-btn {
    
    font-size: 1rem;
    line-height: 1.5;
    margin:15px auto;
    color: #e0e0e0;
    width: 90%;
    height: 50px;
    border-radius: 25px;
    background: #333;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    justify-content: center;
    align-items: center;
    text-transform: uppercase;
    font-weight: 700;
    /*padding: 0 25px;*/
    -webkit-transition: all .4s;
    -o-transition: all .4s;
    -moz-transition: all .4s;
    transition: all .4s;
    position: relative;
    z-index: 1;
    cursor:pointer;
}
.introductory-btn::before {
    content: "";
    display: block;
    position: absolute;
    z-index: -1;
    width: 100%;
    height: 100%;
    border-radius: 25px;
    top: 0;
    left: 0;
    background: #7fd8d0;
    font-weight: bolder;
   
    -webkit-transition: all .4s;
    -o-transition: all .4s;
    -moz-transition: all .4s;
    transition: all .4s;
    opacity: 1;
}
.introductory-btn:hover::before {
    opacity: 0.7;
}
.introductory-sec-btn{
    font-size: 1rem;
    border: 2px solid;
    line-height: 1.5;
    margin:15px auto;
    color: #e0e0e0;
    width: 90%;
    height: 50px;
    border-radius: 25px;
    cursor:pointer;
    
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    justify-content: center;
    align-items: center;
    text-transform: uppercase;
    font-weight: 700;
    /*padding: 0 25px;*/
    -webkit-transition: all .4s;
    -o-transition: all .4s;
    -moz-transition: all .4s;
    transition: all .4s;
    position: relative;
    z-index: 1;
}
.introductory-sec-btn:hover{
    opacity: 0.6;
}


.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0,.8);
    z-index: 999;
    opacity: 1;
    transition: all 0.5s;
}

.lds-dual-ring.hidden {
    display: none;
}

/*Spinner Styles*/
.lds-dual-ring {
    display: inline-block;
    
}
.lds-dual-ring:after {
    content: " ";
    display: block;
    width: 64px;
    height: 64px;
    margin: 5% auto;
    border-radius: 50%;
    border: 6px solid #fff;
    border-color: #fff transparent #fff transparent;
    animation: lds-dual-ring 1.2s linear infinite;
}
@keyframes lds-dual-ring {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}