body {
    height: 100vh;
    margin: 0px;
    display: flex;
}
.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    background: url('bg.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.container h1 {
    color: #fff !important;
    font-size: 55px;
    line-height: 65px;
    position: relative;
    padding: 40px 90px;
    margin: 0px;
    z-index: 1;
}
.container h1:before {
    content:'';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.733);
    top: 0;
    left: 0;
    z-index: -1;
    filter: blur(1px);
}