styles.css

html {
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    background-attachment: fixed;
    background-image: linear-gradient(30deg, rgb(11, 11, 53), #255);
    width: 100%;
    height: 100%;
}

#container>h1,
h2 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #fff;
}

.header>h1 {
    display: flex;
    font-size: 70px;
    position: relative;
    left: 5vw;
    top: 5vh;
    max-width: fit-content;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #fff;
}

.header {
    margin: 0;
    padding: 0;
    height: 50vh;
    width: 100%;
}

#tunaFish {
    position: absolute;
    right: 5%;
    top: 10%;
    width: 120px;
    height: 120px;
}

.row {
    background-color: rgb(27, 22, 36);
    margin: 20px;
    padding: 5px;
    color: #fff;
    border-radius: 7px;
}

.card>img {
    position: absolute;
    right: 5%;
    top: 50%;
    height: 70px;
    width: 70px;
}

#mountainImg {
    margin: 0;
    padding: 0;
    position: relative;
    width: 100%;
    height: 40%;
    top: 10%;
    border-bottom: #255 10px inset;
    border-radius: 0px 60px 7px 7px;
    background-color: transparent;
    filter: brightness(80%);
}

#searchDiv {
    margin: 3px;
    padding: auto;
    border-radius: 7px;
    width: 100%;
    display: flex;
    justify-content: center;
}

#searchBox {
    height: 5vh;
    border-radius: 5px;
    width: 50%;
}

.nav>li {
    background-color: #255;
    border-radius: 5px;
    margin: 10px;
    font-size: medium;
}

ul>.col-xs-10 {
    background-color: transparent;
}

#loadingGif {
    display: inline-block;
    margin: 20px;
    padding: 0;
    height: 50px;
    width: 50px;
    position: relative;
}

.form-check-input {
    height: 20px;
    width: 20px;
}

.form-check-label {
    box-shadow: 3px 3px 5px black;
    border-radius: 5px;
    font-size: medium;
    color: rgb(8, 153, 211);
}

h3 {
    margin: 30px;
    color: #fff;
    max-width: 500px;
    position: absolute;
    top: 70%;
}

.modal-body {
    padding: 0;
    margin: 0;
    min-height: 500px;
}