Hi there,
1. the image below Om #Hashtag Printer?
you have added -20% right margin to the image. Remove that to fix the overflow issue.
2. Try this CSS:
@media(max-width: 768px) {
.main-navigation.toggled .main-nav > ul {
display: flex !important;
flex-wrap: wrap;
}
.main-navigation.toggled .main-nav li {
flex: 1 0 100%;
}
.main-navigation.toggled .main-nav > ul li:nth-last-child(-n+3) {
flex: 0;
margin-left: 20px;
}
}
3. HTML Tables are not responsive, you would need a plugin such as Resposnive Tables or TablePress.