styles.css

/*ALL*/
p{
    color: #1c1c1c;
}

h1{
    /*font-size: 72px;*/
    background: -webkit-linear-gradient(#f00, #174ae9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h3{
    color: black;
}

.btn-default{
    background: linear-gradient(0.38turn, rgb(255 0 0), rgb(35 70 220)) no-repeat center center;
}

.btn-default:hover{
    background: linear-gradient(0.38turn, rgb(122 2 2), rgb(17 42 151)) no-repeat center center;
}

img:hover {
    transform: translate(0, -5px);
    transform: translate3d(0, -5px, 0);
}
img{
    transform: translate3d(0, 0, 0);
    transition: transform 0.2s ease-out;
    will-change: transform;
}

/*SLIDEBAR*/

.nav {
    display: unset;
}

.nav-pills>li.active>a,
.nav-pills>li.active>a:hover,
.nav-pills>li.active>a:focus {
    color: #ffb300;
    background-color: #27272c;
}

/*HEADER*/

.jumbotron{
    background: linear-gradient(rgb(254 249 0), rgb(254 89 0)) no-repeat center center fixed;
    color: black;
}

.jumbotron h1{
    background: unset;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    color: black;

}

.jumbotron hr {
    width: 80%;
    margin: 5px auto;
    border-color: #000000;
}

/*about*/

.well {
     background-color: unset;
     border-radius: unset;
     box-shadow: unset;
}

#about2 .well img{
    display: none;
}

@media (max-width: 991px){

    #about2 .col-md-4 {
        display: none;
    }

}

@media (min-width: 992px){

    #about2 .well img{
        display: initial;
    }

}

/*FOOTER*/

footer {
    background-color: #262626;
    border-top: 10px solid;
    border-color: #ffa600;
    padding: 20px 0 40px;
}
footer span{
    text-align: center;
}
footer img {
    width: 70px;
}

footer a:hover{
    color: white;
}