nav {
    width: 100%;
    height: 100vh;
    position: fixed;
    top: -100vh;
    z-index: 99;
    background-color: #263D8A;
    border-bottom-right-radius: 100%;
    border-bottom-left-radius: 100%;
    transition: all 650ms cubic-bezier(1,0,0,1);
}
nav.open {
    top: 0;
    border-radius: initial;
}
.nav-img {
    text-align: right;
    position: absolute;
    bottom: 55px;
    right: 55px;
}
.nav-img img {
    max-width: 598px;
}
.nv-dwn{
    padding-top: 100px;
}
.nav-listtt ul {
  padding: 0;
  margin: 0;
  list-style-type: none;
  text-align: left;
  margin-left: 90px;
 
}

.nav-listtt ul li {
    display: block;
}

.nav-listtt ul li a {
    color: #fff;
    font-size: 38px;
    display: block;
    transition: 0.2s all ease;
    font-weight: bold;
}

.nav-listtt ul li a:hover {
    opacity: 0.8;
    color: #000000;
    transition: 1.3s ease-in-out;
}


.nav-link:hover, .nav-link:focus {
    color: #fff;
}
.menu-toggler {
    position: absolute;
    top: 24px;
    right: 18px;
    width: 51px;
    height: 35px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 999;
    transition: all 650ms ease-out;
}
.menu-toggler.open {
    transform: rotate(-45deg);
    color: red;
}
.bar {
    background-color: #0F266A;
    width: 100%;
    height: 4px;
    border-radius: 0.8rem;
}


.bar.half {
    width: 50%;
}
.bar.top {
    transform-origin: right;
    transition: transform 650ms cubic-bezier(0.54, -0.81, 0.57, 0.57);
}
.open .bar.top {
    transform: rotate(-450deg) translateX(0.8rem);
}
.bar.bottom {
    align-self: flex-end;
    transform-origin: left;
    transition: transform 650ms cubic-bezier(0.54, -0.81, 0.57, 0.57);
}
.open .bar.bottom {
    transform: rotate(-450deg) translateX(-0.8rem);
}
@media screen and (max-width: 768px) {
    .nav-list {
        flex-direction: column;
    }
    li {
        margin: 2rem 0;
    }
    .nav-link {
        font-size: 2.5rem;
    }


    .nav-listtt ul li a {
    color: #fff;
    font-size: 27px;
    display: block;
    transition: 0.2s all ease;
}

.nav-listtt ul {
    padding: 0;
    margin: 0;
    list-style-type: none;
    text-align: left;
}


}




.menu_a1 {
    width: 90px;
    height: 90px;
    line-height: 150px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    right: 25px;
    top: -34px;
}